GachaMath
GachaMath computes banner odds with exact dynamic-programming models — every (pity, guarantee) state, every pull, no Monte Carlo noise. Base rates and hard pity are official; soft-pity shapes and Capturing Radiance aggregates are community-measured consensus from millions of logged pulls, and we say so on every page ("Model assumptions"). Where income varies by playstyle, the number is editable instead of pretended-precise.
Found an error, or a mechanic we've modeled wrong? A correction channel is being set up — until then, assumptions are documented on each calculator so you can verify independently.
GachaMath is an independent fan project. It is not affiliated with, endorsed by, or connected to HoYoverse or Kuro Games. All game names and content referenced are trademarks and property of their respective owners.